There are 4 criteria for diagnosis, they are:1. Re-experiencing the trauma repetitive memories (or flashbacks) that are hard to control and intrude intoeveryday life nightmares extreme distress caused by reminders of the trauma memories or disturbing thoughts that can be prompted by smells, sounds, words orother triggers.2. Avoidance staying away from places, people or objects that may trigger memories of thetraumatic event changing a normal routine to avoid triggering memories not wanting to talk about or think about the event feeling numb.3. Negative thoughts and mood feeling a sense of hopelessness about the future negative beliefs about oneself or the world blaming oneself or others unreasonably intense worry, depression, anger or guilt loss of memory of the traumatic event no longer enjoying favourite activities becoming emotionally detached from others inability to experience positive emotions.4. ?? http://www.myenvisionedmind.com/

In order to be diagnosed with PTSD, a person must have three different types of symptoms: reexperiencingsymptoms, avoidance and numbing symptoms, and arousal symptoms. Re-experiencingsymptoms are symptoms that involve reliving the traumatic event. There are a number of ways inwhich people may relive a trauma.